Refrigerating apparatus



Feb. 10, 1931. H HULL 1,791,528

REFRIGERATING APPARATUS Filed Feb. 25 1926 roasted ran. an rear nnirn stares TAT nannr n. none, or narrow, onto, assronon, nr nnsnn assren'rannrs, 'ro

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nm nrennarna'e nrrnnnrns Application filed February 25, 1928. Serial l lo. 80,670.

This invention relates to refrigerating apparatus and particularly to'the condensing and receiving .units for such apparatus.

@ne object of this invention is to provide a receiver in which the danger of leakage of liquid refrigerant is reduced to a minimum.

Another object is to provide a simple receiver which maybe readily manufactured and assembled. v

A. further object is to provide a receiver which presents a relatively large surface to the atmosphere.

Another object is to provide a combination of a condenser and a receiver. which 0c- Jis cupies a relatively small space.

Further objects and advantages of the present invention will be apparent from the following description, reference being had to the accompanying drawings, wherein prefi terred embodiments of the present invention are clearly shown.

In the drawin s: I

Fig. l is a 'agrammatic elevation of a refrigerator system embodying the invention.

Fig. 2 is a diagrammatic elevation looking in the direction of the arrow in Fig.1, showing a 'modified form 0t condenser and receiver coils and the motor driven fan.

Fig. 3 is a sectional view on the line 3-3 531? of Fig. 2.

I The compressor is driven by a motor 11 through pulleys 12 and 13 and belt 14. The compressed refrigerant is forced through pipe. 15 tothe condenser coil 16 where it becomes 1i uid, and then drops. to receiver coil 1?. rom the receiver coil liquid re: triger'ant is forced through a pipe 18 and a cooling with). I

Gooling unit 19 may be of any form desired. The refrigerant in the cooling unit 19 expands when heat is absorbed. The expanded gas is withdrawn from the unit 19- through a pipe 20 by the compressdr.

In Fig. 1 there is shown unimproved form of condenser and neceiverpdapted to be used in a system such as is described above. The condenser coil is composed of a plurality of turns 16 of round copper tubing ot s'mall diso amfeter. These turns are spaced apart so that there is ample room for the circulation of air through them.

Connected in series with and directly below the condenser coil is the receiver coil 17. This coil is also made of copper or any other suitable metal tubingwhich isot considerably larger diameter than the tubing of the condenser coil and its turns are placed substantially in-contact with each other. The twocoils'inay be connected in any suitable manso ner as by inserting the smaller tube within the larger tube and soldering the. two together.

The motor 11 which drives the compressor carries at one end of its shaft a tan21. This a? tan is adapted to cause the circulation of air around the condenser and receiver coils.

In the modification shown in Figs. 2 and 3g the combined condenser and receiver unit 22 is made of a single integral piece of tubing 7c of relatively large diameter. Then per turns 24: of this coil are flattened to reduce their cross section, while the lower turns retain their round shape. The flattened portion of this coil presents a relatively large cooling surface to the compressed refrigerant which passes therethrough so that the condensing of this refri erant takes place more rapidly than would e the case in a round coil-having the same exposed surface, that isfithe so volume of gas in the flattened coil is less than the volume that would be contained in a round coil having the same surface area.

In assembling this unit the flattened turns "which act as a condenser are spaced from as each other while the round turns 23 which act as a receiver are substantially in contact with each other. i p

It is readily apparent that by making the condenser coil vo frelatively small tubing in' so one caseor'flattened as in the other case, a large amount of this coil may be wound in a small space. Likewise b placing the turns ofjthe receiver substantially in contact with each other, a large amount of this coil is utilized, thus the assembled unit in thisinvention occupies no more s ace than is re uired where the condenser (:01 alone is used m the conventional structure. v

By making the receiver in the form of a mo coil of tuloing l relatively air cont large surface receiver, so

pared with t x that any relri g r ave lo een liquefied in 1 condenser proper will he reduced to a liquid state in thereceiver;

The present receiver which is simple in construction is cheaply and easily assembled and reduces to nnni a. the dancer of leaks ,e, vvl presem in the conventional cylin rical or rectangular receivers use.

While the forms embodiment of the present invention herein disclosed, consti: tute preferred ins, is be understood that other tar as might be adopted, all coming Within the scope of the claims which -lollow.

What is claimed is as follows:

1. In a refrigerating apparatus, a con denser comprising a coil or. tubing oi relatively small cross section, and a receiver as liquid refrigerant connected in series With the condenser comprising a coil of tubing ofrelatively large cross section,

2., Apparatus as defined in claim it in which the turns of the condenser coil are spaced apart and the turns ol' the receiver coil are substantially in contact with each other;

3. In a refrigerating system, a condenser c011 and a receiver coil connected in series be ing being Wound stant cross section,.s into coil,

9. a rel'rigeratin denser and receiver s single integral piece c. the tuhing having s surface per unit volun of said tubing having v tially constant suriace tubing being vvound' l0. a reirigerct ystem a unitary condenser and receiver cture comprising a single integral piece 1 sing "wound into a coil having an upright arms, the upper turns oil the coil having relatively small cross section and the lower turns of the coil having relatively large cross section,

ll ln a refrigerating system unitary condenser and receiver structure-comprising a single integral piece I tubing around into a coil having an upri t unis, the tubing in the upper turns of the coil. having a relatively large surface per unit volume and the tubing in the lower turns oi the coil having a relatively small surface per unit VOllll G,

' lln testimony whereof ii hereto my signature with said condenser coil, the turns of said condenser coil being spaced apart, and the turns of said receiver coil being substantially in contact with each other 4. In a refrigerating system, a condenser coil, a receiver coil, and a tan tor attracting the circulation of air around said condenser coil and'said receiver coil,

' 5. In a refrigerating system a unitary condenser and receiver structure comprising a single integral piece oi tubingvvound into a coil, the tubing in some of the turns oiisaid coil vhavin a smaller cross section than that in other 0 the turns,

6. In a refrigerating system a unitary condenser and receiver structure comprising asingle integral piece of tubing Wound into a coil, the tubing in some of the turns of said coil havin a greater surfaceper unit volume than that in other of the turns.

7. In a refrigerating system a unitary condenser and receiver structure comprising a sin is into ral piece of tubing Wound into a coi the tu ing in some of the turns of said coil being flattened toprovide a condenser conduit of relatively small cross section, and the tubing in other of the turns having a relatively large cross section.

8. In a refrigerating system a unitary condenser and receiver structure comprising a sin 1e integral piece of tubing, one portion of sai tubing having a substantially constant cross section, and another portion of said tubing having difierent substantially con- 

